@misc{andersson2024metricspaces,
	  author       = {Samuel Erickson and Anders Björn and David Wiman},
	  title        = {An Introduction to Metric Spaces},
	  year         = {2024},
	  howpublished = {Lecture notes for TATA34 Real analysis, honours course, Linköping University},
	  url          = {https://courses.mai.liu.se/GU/TATA34/An_Introduction_to_Metric_Spaces.pdf},
}